<template>

	<a-layout id="components-layout-demo-top-side-2">
		<a-layout-header class="header">
			<div class="logo" />
			<a-menu theme="dark" mode="horizontal" :defaultSelectedKeys="['2']" :style="{ lineHeight: '64px' }">
				<a-menu-item key="1">nav 1</a-menu-item>
				<a-menu-item key="2">nav 2</a-menu-item>
				<a-menu-item key="3">nav 3</a-menu-item>
			</a-menu>
		</a-layout-header>
		<a-layout>
			<a-layout-sider width="200" style="background: #fff">
				<a-menu mode="inline" :openKeys="openKeys" @openChange="onOpenChange" :style="{ height: '100%', borderRight: 0 }">
					<a-sub-menu key="sub1">
						<span slot="title">
							<a-icon type="user" />subnav 1</span>
						<a-menu-item key="1">option1</a-menu-item>
						<a-menu-item key="2">option2</a-menu-item>
						<a-menu-item key="3">option3</a-menu-item>
						<a-menu-item key="4">option4</a-menu-item>
					</a-sub-menu>
					<a-sub-menu key="sub2">
						<span slot="title">
							<a-icon type="laptop" />subnav 2</span>
						<a-menu-item key="5">option5</a-menu-item>
						<a-menu-item key="6">option6</a-menu-item>
						<a-menu-item key="7">option7</a-menu-item>
						<a-menu-item key="8">option8</a-menu-item>
					</a-sub-menu>
					<a-sub-menu key="sub3">
						<span slot="title">
							<a-icon type="notification" />subnav 3</span>
						<a-menu-item key="9">option9</a-menu-item>
						<a-menu-item key="10">option10</a-menu-item>
						<a-menu-item key="11">option11</a-menu-item>
						<a-menu-item key="12">option12</a-menu-item>
					</a-sub-menu>
				</a-menu>
			</a-layout-sider>

			<a-layout style="padding: 0 24px 24px">
				<a-breadcrumb style="margin: 16px 0">
					<a-breadcrumb-item>Home</a-breadcrumb-item>
					<a-breadcrumb-item>List</a-breadcrumb-item>
					<a-breadcrumb-item>App</a-breadcrumb-item>
				</a-breadcrumb>
				<a-layout-content :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }">
					Content <a-button type="primary" icon="download">Button</a-button>
				</a-layout-content>
			</a-layout>
		</a-layout>
	</a-layout>
</template>
<script>
	export default {
		data() {
			return {
				rootSubmenuKeys: ['sub1', 'sub2', 'sub3'],
				openKeys: ['sub1'],
			}
		},
		methods: {
			onOpenChange(openKeys) {
				const latestOpenKey = openKeys.find(key => this.openKeys.indexOf(key) === -1)
				if (this.rootSubmenuKeys.indexOf(latestOpenKey) === -1) {
					this.openKeys = openKeys
				} else {
					this.openKeys = latestOpenKey ? [latestOpenKey] : []
				}
			},
		},
	}
</script>

<style>
	/* #components-layout-demo-top-side-2 .logo {
  width: 120px;
  height: 31px;
  background: rgba(255,255,255,.2);
  margin: 16px 28px 16px 0;
  float: left;
} */
</style>
